Difference between revisions of "CH Discriminator Dual Pulsing"

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FuncGen_TFAmp_SpecAmp_CAEN80mV_10us_03152022.png|<span style="color:#ffff00">'''Yellow:'''</span> Function Generator output. <span style="color:#00ffff">'''Aqua:'''</span> Timing Filter Amp output.  <span style="color:#800080">'''Purple:'''</span> Spec Amp output.  <span style="color:#00ff00">'''Lime:'''</span>: CAEN Disc output.
 
FuncGen_TFAmp_SpecAmp_CAEN80mV_10us_03152022.png|<span style="color:#ffff00">'''Yellow:'''</span> Function Generator output. <span style="color:#00ffff">'''Aqua:'''</span> Timing Filter Amp output.  <span style="color:#800080">'''Purple:'''</span> Spec Amp output.  <span style="color:#00ff00">'''Lime:'''</span>: CAEN Disc output.
  
FuncGen_TFAmp_SpecAmp_CAEN80mV_4ms_03152022.png|<span style="color:#800080">'''Purple:'''</span> Input signal from spec amp. <span style="color:#ffff00">'''Yellow:'''</span> CAEN Dual Timer using Lecroy Disc as input. <span style="color:#00ffff">'''Aqua:'''</span> Lecroy Disc Output. <span style="color:#00ff00">'''Lime:'''</span>: CAEN Update Mode Disc Output.
+
FuncGen_TFAmp_SpecAmp_CAEN80mV_4ms_03152022.png|<span style="color:#ffff00">'''Yellow:'''</span> Function Generator output. <span style="color:#00ffff">'''Aqua:'''</span> Timing Filter Amp output.   <span style="color:#800080">'''Purple:'''</span> Spec Amp output.   <span style="color:#00ff00">'''Lime:'''</span>: CAEN Disc output.
  
 
FuncGen_TFAmp_SpecAmp_CAEN_2us_03152022.png|<span style="color:#800080">'''Purple:'''</span> Input signal from spec amp. <span style="color:#ffff00">'''Yellow:'''</span> CAEN Dual Timer using CAEN Disc as input. <span style="color:#00ffff">'''Aqua:'''</span> Lecroy Disc Output. <span style="color:#00ff00">'''Lime:'''</span>: CAEN Update Mode Disc Output.
 
FuncGen_TFAmp_SpecAmp_CAEN_2us_03152022.png|<span style="color:#800080">'''Purple:'''</span> Input signal from spec amp. <span style="color:#ffff00">'''Yellow:'''</span> CAEN Dual Timer using CAEN Disc as input. <span style="color:#00ffff">'''Aqua:'''</span> Lecroy Disc Output. <span style="color:#00ff00">'''Lime:'''</span>: CAEN Update Mode Disc Output.

Revision as of 17:13, 17 March 2022

Discriminators

All needed specifications can be found within the appropriate manual

CAEN N841 Leading Edge Discriminator

Modes: Update and Non-Update

  • For use with He3 tube, Update vs Non-update mode did not seem to make a difference in discriminator output.
  • See pages 10 & 12 in user manual

File:CAEN N841 Manual.pdf

Lecroy 821 Quad Discriminator

File:LRS 821 Specifications.pdf

Tektronix DPO 4104 Digital Phosphor Oscilloscope

For reference: Input to discriminators is spec amp output with the following settings

Course gain: 10

Fine gain: 1

Shaping type: Gaussian

Shaping time: 2us

Continued Investigations

03/01/2022

  • Sourced a function generator

Function generator: Protek 93120 Digital Synthesis Arbitrary Function Generator/Counter

Measurements

I used a DC offset to create a purely negative pulse using a square wave signal ranging from 0 to -1V

Run Number Configuration Generator Rate Generator Pulse Amplitude (Set) Generator Pulse Height (Measured) Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Function Gen feeding Scalar 1.00 KHz 1.00V ~1V 100000 100 1.000KHz
2 Function Gen feeding Scalar 1.00 KHz 1.00V ~1V 100000 100 1.000KHz
3 Function Gen feeding Scalar 1.00 KHz 1.00V ~1V 100000 100 1.000KHz
4 Function Gen feeding Scalar 1.00 KHz 1.00V ~1V 100000 100 1.000KHz
5 Function Gen feeding Scalar 1.00 KHz 1.00V ~1V 100000 100 1.000KHz

I used a DC offset to create a purely negative pulse using a sine wave signal ranging from 0 to -1V that is discriminated by the Lecroy disc.

Run Number Configuration Generator Rate Generator Pulse Amplitude (Set) Generator Pulse Height (Measured) Counts Run Time (Sec) Count Rate (Hz) Uncertainty
1 Function Gen, Lecroy Disc, Scalar 1.00 KHz 1.00V ~1V 100
2 Function Gen, Lecroy Disc, Scalar 1.00 KHz 1.00V ~1V 100
3 Function Gen, Lecroy Disc, Scalar 1.00 KHz 1.00V ~1V 100
4 Function Gen, Lecroy Disc, Scalar 1.00 KHz 1.00V ~1V 100
5 Function Gen, Lecroy Disc, Scalar 1.00 KHz 1.00V ~1V 100

Electronics Chain Investigation






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